annaexpo.blogg.se - Important cmake variables

#Important cmake variables how to#
#Important cmake variables windows 10#
#Important cmake variables software#
#Important cmake variables code#

Modern CMake is a nice way to replace unreadable & unmaintainable "2k-lines-long" CMakelists.txt files with clean, short bunches of instructions. Just like C++, CMake has a paradigm gap between so-called legacy and modern releases. In short, modern CMake starts from CMake 3.1. This popular saying best reflects the requested mindset here. "Hope for the best, be prepared for the worst" Most projects are likely to build on different systems, involving different OS, compilers, generators, and of course cmake releases. What works perfectly fine locally may be a total mess on another system. This matters a lot, as a single CMakelist.txt may result in different behaviors when processed across multiple release.

#Important cmake variables windows 10#

On MS Windows 10 with Ms Visual Studio 2019, CMake 3.10 or greater. Especially the lowest.įor instance, if you work with Ubuntu 14.04 LTS Docker containers, you are more likely to use GCC 4.8.4 and CMake 2.8. Make sure to read until the end, I'll show you a pattern I use to create CMake modules for targets importation ! 1 - Know your CMake version(s)įirst, know which CMake release are your targets. I strongly encourage you to read the documentation and make your own experience.

Googling for advises was more a source of frustration than answers.ĭisclaimer : I still do not know if I use CMake the right way.

Especially because of the lack of standard practices in CMake usage, and in particular the insufficient adoption of modern design patterns. It is these tips & tricks that I'm willing to share with you across this article. Thus, I spent the last past months writing CMake scripts, experimenting and learning new tricks along the way. However, being always ready for new challenges, and eager to learn, I accepted the request. Indeed, I used to work in teams where someone's job was dedicated to CI/CD tools, including build scripts, Git, Jenkins, Gitlab CI, Dockers, etc. Since about a year, I work for a famous French telecoms company.Īccording to the company size, I was pretty surprised when I was requested to create CMake scripts.

#Important cmake variables code#

Thus, I spend most of my time improving codebases quality, increasing softwares performances, as well as training teams to modern C++.īeside, migrating existing code from legacy to modern C++ is such a rewarding work, as it usually both increase quality and performances, while greatly decreasing the amount of code. I daily deal with template metaprogramming, modern design patterns implementation, and new concepts experimentation.

#Important cmake variables software#

? Saves a matched subexpression, which can be referenced in the REGEX REPLACE operation.Requirement : A first experience with CMake IntroĪs a modern C++ specialist, my job is to focus on software development, from a performance and quality perspective. is To match a literal – using brackets, make it the first or the last character e.g. Inside brackets, specifies an inclusive range between characters on either side e.g.

#Important cmake variables how to#

How to match a string with brackets in CMake? This was used by programmers in the old VB days, I am not sure why it is still present in VB.NET. Putting a % sign at the end of the variable name in Visual Basic indicates that it is an integer. The index stored in will also be counted in bytes, so strings containing multi-byte characters may lead to unexpected results. The string (FIND) subcommand treats all strings as ASCII-only characters. If the is not found, a position of -1 is returned. What happens if a string is not found in CMake? Make sure to add the CMAKE_CXX_STANDARD declarations above the call to add_executable.

Where do I set the standard variable in CMake?įor this tutorial, set the CMAKE_CXX_STANDARD variable in the CMakeLists.txt file to 11 and CMAKE_CXX_STANDARD_REQUIRED to True. What does a percentage symbol mean in VB.NET? The add_subdirectory () and function () commands are special, because they open-up their own scope. Normal variables are visible to the CMakeLists.txt they are set in and everything called from there ( add_subdirectory (), include (), macro () and function () ). Are there normal variables in CMakeLists.txt?